Clion doesnt compile on MacOS sequoia

Hello!

What build system is your project based on?

If it's CMake, please do `Tools | CMake | Reset Cache and Reload Project` and provide the entire output from the CMake tool window.

/Applications/CLion.app/Contents/bin/cmake/mac/aarch64/bin/cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_MAKE_PROGRAM=/Applications/CLion.app/Contents/bin/ninja/mac/aarch64/ninja -G Ninja -S "/Users/emil/CLionProjects/uge 4/untitled" -B "/Users/emil/CLionProjects/uge 4/untitled/cmake-build-debug"
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc - broken
CMake Error at /Applications/CLion.app/Contents/bin/cmake/mac/aarch64/share/cmake-3.29/Modules/CMakeTestCCompiler.cmake:67 (message):
 The C compiler

   "/usr/bin/cc"

 is not able to compile a simple test program.

 It fails with the following output:

   Change Dir: '/Users/emil/CLionProjects/uge 4/untitled/cmake-build-debug/CMakeFiles/CMakeScratch/TryCompile-qSPDRT'
   
   Run Build Command(s): /Applications/CLion.app/Contents/bin/ninja/mac/aarch64/ninja -v cmTC_296d5
   [1/2] /usr/bin/cc   -arch arm64 -o CMakeFiles/cmTC_296d5.dir/testCCompiler.c.o -c '/Users/emil/CLionProjects/uge 4/untitled/cmake-build-debug/CMakeFiles/CMakeScratch/TryCompile-qSPDRT/testCCompiler.c'
   FAILED: CMakeFiles/cmTC_296d5.dir/testCCompiler.c.o 
   /usr/bin/cc   -arch arm64 -o CMakeFiles/cmTC_296d5.dir/testCCompiler.c.o -c '/Users/emil/CLionProjects/uge 4/untitled/cmake-build-debug/CMakeFiles/CMakeScratch/TryCompile-qSPDRT/testCCompiler.c'
   xcode-select: note: No developer tools were found, requesting install.
   If developer tools are located at a non-default location on disk, use `sudo xcode-select --switch path/to/Xcode.app` to specify the Xcode that you wish to use for command line developer tools, and cancel the installation dialog.
   See `man xcode-select` for more details.
   ninja: build stopped: subcommand failed.
   
   

 CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
 CMakeLists.txt:2 (project)

-- Configuring incomplete, errors occurred!

[Failed to reload]
 

The error says “No developer tools were found, requesting install”. Please install them - https://www.jetbrains.com/help/clion/quick-tutorial-on-configuring-clion-on-macos.html#reqtools.

Thank you so much Anna!

I am having the same problem, but I have XCode Command Line Tools already installed.  Even the stock “Hello World” template is throwing errors saying that iostream cannot be found.

Thomas Rossi , please do `Tools | CMake | Reset Cache and Reload Project` and past here the entire output from the CMake tool window.

/Users/trossi/Applications/CLion.app/Contents/bin/cmake/mac/aarch64/bin/cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_MAKE_PROGRAM=/Users/trossi/Applications/CLion.app/Contents/bin/ninja/mac/aarch64/ninja -G Ninja -S /Users/trossi/CLionProjects/ErrorTest -B /Users/trossi/CLionProjects/ErrorTest/cmake-build-debug -- The C compiler identification is AppleClang 16.0.0.16000026 -- The CXX compiler identification is AppleClang 16.0.0.16000026 -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working C compiler: /Library/Developer/CommandLineTools/usr/bin/cc - skipped -- Detecting C compile features -- Detecting C compile features - done -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Check for working CXX compiler: /Library/Developer/CommandLineTools/usr/bin/c++ - skipped -- Detecting CXX compile features -- Detecting CXX compile features - done -- Configuring done (1.1s) -- Generating done (0.0s) -- Build files have been written to: /Users/trossi/CLionProjects/ErrorTest/cmake-build-debug [Finished]

Thomas Rossi , the output looks fine. Do you still observe the issue?

Yes, the error output is as follows:

/Users/trossi/Applications/CLion.app/Contents/bin/cmake/mac/aarch64/bin/cmake --build /Users/trossi/CLionProjects/ErrorTest/cmake-build-debug --target ErrorTest -j 6
[1/2] Building CXX object CMakeFiles/ErrorTest.dir/main.cpp.o
FAILED: CMakeFiles/ErrorTest.dir/main.cpp.o 
/Library/Developer/CommandLineTools/usr/bin/c++   -g -std=gnu++20 -arch arm64 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX15.0.sdk -fcolor-diagnostics -MD -MT CMakeFiles/ErrorTest.dir/main.cpp.o -MF CMakeFiles/ErrorTest.dir/main.cpp.o.d -o CMakeFiles/ErrorTest.dir/main.cpp.o -c /Users/trossi/CLionProjects/ErrorTest/main.cpp
/Users/trossi/CLionProjects/ErrorTest/main.cpp:1:10: fatal error: 'iostream' file not found
   1 | #include <iostream>
     |          ^~~~~~~~~~
1 error generated.
ninja: build stopped: subcommand failed.

If it helps, order to compile I have found that I need to use “-isystem /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1 ” when invoking the compiler via the command line. 

Please in the Terminal execute sudo xcode-select -switch /Library/Developer/CommandLineTools/, after that necessarily do Tools | CMake | Reset Cache and Reload Project in CLion. 

If it doesn't help, please reinstall Xcode command line developer tools: uninstall them using sudo rm -rf /Library/Developer/CommandLineTools and then install again by executing xcode-select --install. After that, remove the cmake-build-debug subdirectory from your project and do Tools | CMake | Reset Cache and Reload Project in CLion. 

i got the same problem too
/Users/test/Applications/CLion.app/Contents/bin/cmake/mac/aarch64/bin/cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_MAKE_PROGRAM=/Users/test/Applications/CLion.app/Contents/bin/ninja/mac/aarch64/ninja -G Ninja -S /Users/test/CLionProjects/untitled -B /Users/test/CLionProjects/untitled/cmake-build-debug
CMake Warning (dev) in CMakeLists.txt:
 No project() command is present.  The top-level CMakeLists.txt file must
 contain a literal, direct call to the project() command.  Add a line of
 code such as

   project(ProjectName)

 near the top of the file, but after cmake_minimum_required().

 CMake is pretending there is a "project(Project)" command on the first
 line.
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Warning (dev) in CMakeLists.txt:
 cmake_minimum_required() should be called prior to this top-level project()
 call.  Please see the cmake-commands(7) manual for usage documentation of
 both commands.
This warning is for project developers.  Use -Wno-dev to suppress it.

-- The C compiler identification is AppleClang 16.0.0.16000026
-- The CXX compiler identification is AppleClang 16.0.0.16000026
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /Library/Developer/CommandLineTools/usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /Library/Developer/CommandLineTools/usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done (0.5s)
-- Generating done (0.0s)
-- Build files have been written to: /Users/test/CLionProjects/untitled/cmake-build-debug

[Finished]
 

Sunthorn Ko, the problem you faced doesn't look the same. In your case, the warning is "CMake Warning (dev) in CMakeLists.txt:
 No project() command is present". Please check if there is a project() command in your CMakeLists.txt.

I have the same problem.

Reason: The header path on mac is ‘/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk’, but Clion requires ‘/usr/include’.

ways of resolution: Add config on Cmake.txt.

include_directories("/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1")
include_directories("/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include")